[svn r341] Fix all regressions between [332] and [340]: - fixed assert on empty catch body - fixed(?) typedefed classes in catch specification - fixed assert with catchall Added some documentation.

module bug22;
extern(C) int printf(char*, ...);

void main()
{
    int i;
    delegate {
        i = 42;
    }();
    printf("%d\n", i);
    assert(i == 42);
}